Casting my own speed kits?

So Im going into mechanical engineering at MSU and have been thinking about designing my own cylinder based after the 65cc metra. I know how to run a pretty high powered computer design program, one that car companies use to design their cars with, and have access to laths and mills and pretty much anything that would aid in the design of this cylinder. I was wondering the types of things that I would need to look into to get this thing going. I would like to use it as a senior project, maybe, but I would also like to produce and sell them. Hopefully I can get some advice. Thanks.

Re: Casting my own speed kits?

💀Kim Jong illest💀 /

clone the motobecane 70cc parmakit and youll be rich

ill buy 5

Re: Casting my own speed kits?

make a high compression dual sparkplug head for a puch e50. wish i would have done something cool when i had access to ll the cnc machines when i was going to school for engineering. at least i made a hydrolic tubing bender. anyway, good luck with the project!

Re: Casting my own speed kits?

Haha I would look into it. Most of knowledge right now is in puchs. I guess if I had one to look at I could copy the port map and such but I have nothing.

Re: Casting my own speed kits?

find some to loan you here kit and copy it... are you planning on milling from a solid stock of AL or casting?

Re: Casting my own speed kits?

too late! had the same idea

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If I mill out of aluminum dont I have to coat the cylinder walls in something? Chrome, or nicasil. Or could I get a block or cast iron and just mill it out of that?

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yeah you'de have to coat with something to keep from binding. you could mill from the cast iron. it'd be cheaper... and once you have your cnc program set up it'd be so easy to mass produce

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Sweet, and after that I'll have to conquer the world. HAHAHA.

Re: Casting my own speed kits?

well, the iron kits usually have aluminum cooling fins. my 80 metra is just a cast iron sleeve like pressed into an aluminum jug. but yeah dude, make some heads and shit and i bet people will buy them. you should look into some engine designs and stuff. this could be pretty awesome!

Re: Casting my own speed kits?

what "computer design program" are you using?

Re: Casting my own speed kits?

NX 5.0

Re: Casting my own speed kits?

i'm pretty sure a cast iron jug could disapate enough heat with enough thin cooling fins... and for the sake of simplicity i'd stick with just one metal. you should really consider making some heads. there are not alot out there compaired to big bore kits

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I also have solid edge on my laptop but it crashes too much. So I'm using the rograms at our engineering building.

Re: Casting my own speed kits?

that's a prety advanced program. all you'de really need is like autoCAD and a program to convert it to cnc controls. i forgot what the converting program i used was called...

Re: Casting my own speed kits?

Yeah I know its a pretty crazy program but it lets me see a good 3D picture of what Im doing plus the teacher I had the year before would be glad to help me with the final program. He's really excited about this program, so if I approached him about my project Im sure he'd help me out. Also the CNC machines are like right down the hall in the same building. Its like this was men't to happen.

Re: Casting my own speed kits?

if you're gonna make anything, make metra copies in watercooled versions, probably easier to design than the air cooled ones

mike

Re: Casting my own speed kits?

i was thinking about it, and you should just start making your kits as a whole engine instead of just the top end. if i were you i would start production on the 7 speed e85 case asap.

Re: Casting my own speed kits?

lol. watercooled would be nice. as far as easier goes yeah it would be, but once you have your code written its as easy for both. just hit start! i sent you an email btw

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I think I going to stick with just cooling fins, but thanks for the advice.

Re: Casting my own speed kits?

A lot of motors are cast aluminum with a steel sleeve. Allignment can be a problem, because the ports are usually cut into the sleeve before it's put into the rest of the cylinder. It's a little easier to manufacture, because it's a little impossible with most machines to turn 90 degrees at the end of a blind hole.

Re: Casting my own speed kits?

design pistons that don't expand so much and sieze. Maybe cast them from old used discarded diesel piston material

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all you need is a groved piston. it help lubricate the cylinder much better preventing sieze

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if m/cing cylinders was so much cheaper and easier than casting them wouldnt all the companies be doing it?!

think about it....think about all the wasted material you've gotta cut out...how would you get those nice smooth transfer passages?...and then after all that hard m/cing you've got to get them nicasil coated somewhere, mroe expense!

you'll never beat the big companies for cost, doing bespoke things like cylinder heads, as lots of people mentioned, is what to do. make watercooled heads...or heads with different combustion designs...and more cooling area.

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Its not possible to CNC a cylinder. How are you going to get the bit deep inside and curving around to produce transfer ports? There are crazy CNCs used for porting that I really doubt you have access to, but I don't think even those could CNC a cylinder from scratch. Making cylinders requires complex casting procedures, and designing the cylinder is also far beyond your skill. You could maybe make a custom head if you have access to some high precision equipment. Realize metal stock isn't that cheap and you'll definately screw it up before you get it right.

Re: Casting my own speed kits?

Way to shit on his parade noah. jeeez

Re: Casting my own speed kits?

make cases. rip off e50 cases.

Re: Casting my own speed kits?

its mastercam

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in less you are going to cast something to a near net form and then m/c it there's really no point, you won't be able to make it any cheaper than the big companies because of the amount of material you will be wasting...think about all the air that is in a case that would need m/cing out.

watercooled heads (air cooled there is too much wastage; think about all the spaces between the fins) and small things that arn't available in the market would be the only things that might be worth making.

in fact watercooled cylider heads with different inserts would be sweet....make them now.

Re: Casting my own speed kits?

I cast my vote (i know we're not really voting) for high comp watercooled heads for puchs, minarellis, and other assorted flavors.

mike

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